Start Date for Weekly Stats Do Not Match WP-Admin

[thabotswana]

Describe the bug It was reported in 4899149-zen that the start date for this week’s orders in the app differs from the start date in wp-admin. The app starts the week on Sunday, whereas in wp-admin, the week starts on Monday. I was able to reproduce this with my test site.

To Reproduce Steps to reproduce the behavior:

1. In the app, go to My store > This Week
2. Notice the start date
3. Then in the web version of your site, go to WooCommerce > Analytics, and select "Week to date"
4. Compare the start date with that of the app

Expected behavior The start dates should match

Isolating the problem (mark completed items with an [x]):

• [ ] I have deactivated other plugins and confirmed this bug occurs when only WooCommerce plugin is active.
• [x ] This bug happens with a default WordPress theme active, or Storefront.
• [x ] I can reproduce this bug consistently using the steps above.

Mobile Environment Please include:

• Device: iPhone SE
• iOS version: 15.4
• WooCommerce iOS version: 8.7

[shiki]

Android issue: https://github.com/woocommerce/woocommerce-android/issues/6102

[shiki]

Related discussion p1648460986027569-slack-C6H8C3G23

Idea from Aaron:

we should probably match the remote site's settings for the stats screens in general and then put a visual notice up if the timezones don't match.